Holder OK'd search warrant for Fox News reporter's private emails, official says (NBCNews)Attorney General Eric Holder signed off on a controversial search warrant that identified Fox News reporter James Rosen as a “possible co-conspirator” in violations of the Espionage Act and authorized seizure of his private emails, a law enforcement official told NBC News on Thursday.

The disclosure of the attorney general’s role came as President Barack Obama, in a major speech on his counterterrorism policy, said Holder had agreed to review Justice Department guidelines governing investigations that involve journalists.